package com.heima.admin.service.impl;

import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.admin.mapper.AdUserMapper;
import com.heima.admin.service.AdUserService;
import com.heima.common.exception.CustException;
import com.heima.model.admin.dtos.AdUserDTO;
import com.heima.model.admin.pojos.AdUser;
import com.heima.model.admin.vos.AdUserVO;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.utils.common.AppJwtUtil;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.DigestUtils;

import java.nio.charset.StandardCharsets;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

/**
 * @author mrchen
 * @date 2022/7/2 10:29
 */
@Service
public class AdUserServiceImpl extends ServiceImpl<AdUserMapper, AdUser> implements AdUserService {

    @Transactional
    @Override
    public ResponseResult login(AdUserDTO dto) {
        // 1. 校验参数 (用户名  密码)
        String name = dto.getName();
        String password = dto.getPassword();
        if(StringUtils.isBlank(name) || StringUtils.isBlank(password)){
            CustException.cust(AppHttpCodeEnum.PARAM_INVALID,"用户名或密码不能为空");
        }
        // 2. 根据用户名查询用户信息
        AdUser adUser = this.getOne(Wrappers.<AdUser>lambdaQuery().eq(AdUser::getName, name));
        if (adUser == null) {
            CustException.cust(AppHttpCodeEnum.DATA_NOT_EXIST,"用户不存在");
        }
        // 3. 对比用户输入的密码 和 数据库中的密码是否一致
        String inputPwd = DigestUtils.md5DigestAsHex((password + adUser.getSalt()).getBytes(StandardCharsets.UTF_8));
        if(!inputPwd.equalsIgnoreCase(adUser.getPassword())){
            CustException.cust(AppHttpCodeEnum.LOGIN_PASSWORD_ERROR,"输入密码错误");
        }
        // 4. 检查用户账户状态   9
        int status = adUser.getStatus().intValue();
        if(status!=9){
            CustException.cust(AppHttpCodeEnum.LOGIN_STATUS_ERROR);
        }
        // 5. 修改最近loginTime
        adUser.setLoginTime(new Date());
        this.updateById(adUser);
        // 6. 颁发token
        String token = AppJwtUtil.getToken(Long.valueOf(adUser.getId()));
        // 7. 封装返回结果  data: {token : "" , user: {} }
        Map result = new HashMap<>();
        result.put("token",token);
        // 因为adUser中有一些敏感信息，所以封装vo返回结果，将adUser的属性值拷贝到vo中
        AdUserVO adUserVO = new AdUserVO();
        BeanUtils.copyProperties(adUser,adUserVO);
        result.put("user",adUserVO);
        return ResponseResult.okResult(result);
    }
}
